.gray{
	
	width:32px;
	height:32px;
	background-image:url(star_gray.png);
	float:left;
}

.yellow{
	
	width:32px;
	height:32px;
	background-image:url(star_yellow.png);
	float:left;
}
.yellow:hover{
	
	width:32px;
	height:32px;
	background-image:url(star_blue.png);
	float:left;
}
.gray:hover{
	
	width:32px;
	height:32px;
	background-image:url(star_blue.png);
	float:left;
}